Double-path operation single-turntable longan pitting machine

Abstract

The utility model provides a double-circuit operation single turntable longan pitting machine, which is provided with a rack with an upper layer of frame plate, a middle layer of frame plate and a lower layer of frame plate, and the rack is provided with a main power mechanism, a conveying mechanism, two groups of pit jacking mechanisms, a pitting mechanism, a linkage mechanism and two groups of shell and flesh jacking mechanisms. The longan pitting machine is improved and designed on the basis of a mechanical linkage type longan pitting machine driven by a single motor in the prior art; according to the utility model, the advantages that the original technical scheme is accurate in processing and positioning, accurate in coring, good in integrity of processed pulp, capable of being matched with fruits of different sizes, capable of conveniently detaching and cleaning a tong head of the coring tong after shutdown, and the like are reserved; in addition, a single-way operation single-turntable structure in the original technical scheme is improved into a left-right double-way operation single-turntable structure, and on the longan pitting machine, the operations of placing, conveying, pitting, pitting and shell and flesh jacking of the longan can be carried out in double ways, so that the processing efficiency of the machine can be effectively improved.

Description

Technical Field

[0001] The utility model relates to a fruit core removing machine, in particular to a double-path running single-turntable longan core removing machine, belonging to the technical field of food processing machinery. Background Art

[0002] The basic working principle of most longan pitting and shelling machines is: first use a cutter to cut the longan pit and separate the fruit stalk from the flesh, then use a thin push rod to push the longan pit out of the flesh, and then separate the flesh from the shell. This type of longan pitting and shelling machine generally has the following defects when pitting:

[0003] (1) The driving and positioning control are complex, resulting in inaccurate processing positioning, which is prone to cumulative errors, and then causes inaccurate pit removal, incomplete separation of pulp and pit, high loss rate of pulp and juice, poor integrity of processed pulp, and inability to obtain the lantern-shaped pulp with the best appearance, which greatly reduces the product selling price.

[0004] (2) The design of the cutter used to separate the fruit stem and the flesh is not reasonable. Most of them use a simple integral ring cutter. The ring incision of this type of cutter is difficult to match with fruits of different sizes. If the incision is too small, it will not be able to cut off the adhesion between the fruit stem and the flesh, and the appearance of the flesh will be damaged when removing the core. If the incision is too large, the separated fruit stem will be accompanied by too much flesh, resulting in flesh loss.

[0005] (3) The cutting knife is not easy to remove and clean after removing the core. The cutting knife will be contaminated by a large amount of longan juice during use. If it is not cleaned in time after use, harmful substances such as mold will be produced, which will contaminate the pulp when used next time.

[0006] In order to solve the above-mentioned defects, our company has developed a single-motor-driven mechanical linkage longan core-removing machine in Chinese patent CN 202222569290.4. The technical solution of this patent adopts a single-path single-turntable structure, and the placement, transportation, core-topping, core-removing, and shell-topping of longan are completed in a single route. In order to further improve the working efficiency of the machine, our company has made structural improvements on the basis of this technical solution to form a dual-path single-turntable longan core-removing machine. Utility Model Content

[0007] The utility model aims to provide a longan core removing machine with a single turntable and a dual-path operation so as to obtain higher working efficiency.

[0008] The specific technical solution of the utility model is:

[0009] A dual-path single-turntable longan core removing machine is provided with a frame with upper, middle and lower three-layer shelves, and the frame is provided with a main power mechanism, a conveying mechanism, two groups of core pushing mechanisms, a core removing mechanism, a linkage mechanism and two groups of shell and meat pushing mechanisms.

[0010] The main power mechanism is elevated above the lower shelf plate of the frame by a bearing seat assembly and rotatably supports a horizontal and transverse driving shaft. The right end of the driving shaft is connected to the reduction motor through a coupling, and the reduction motor drives the driving shaft. The left end of the driving shaft is connected to the driven shaft of the linkage mechanism through a vertically arranged chain transmission assembly, so that the driven shaft and the driving shaft keep rotating synchronously; the shaft body of the driving shaft is also fixedly connected with a sprocket lever, a left lower cam, a turntable lever, and a right lower cam that rotate synchronously with the driving shaft from left to right.

[0011] The conveying mechanism is provided with left and right groups of conveying chains on the outer sides of the middle and lower shelf plates of the frame, and each group of conveying chains is provided with two parallel and spaced vertical conveying chain circles, and the four conveying chain circles of the two groups of conveying chains are driven to move synchronously by the coaxial four-row driving sprockets installed at the rear end of the lower shelf plate, and the front and rear ends of the middle shelf plate are respectively provided with driven sprockets for supporting each conveying chain circle, and the wheel shaft of the driving sprocket extends to the left and is connected with a vertical star wheel, which is located behind the driving shaft and corresponds to the sprocket lever on the driving shaft, and the sprocket lever drives the vertical star wheel to intermittently rotate one tooth position every time the sprocket lever rotates one circle, and the driving sprocket follows the vertical star wheel. The wheels rotate synchronously; between the two conveyor chain circles, each fixed cross-frame has a group of conveyor plates evenly spaced along the outer edge of the conveyor chain circle, and the conveyor plates move synchronously with the conveyor chain circle. Each rotation of the vertical star wheel by one tooth position drives the conveyor chain circle to move the displacement of one conveyor plate. When the conveyor plate is located directly above the driving shaft, it is the core removal station; when the conveyor plate is located at the uppermost end directly behind, it is the shell and meat removal station; positioning holes and fruit supporting holes are provided on the conveyor plates, and the left and right groups of conveyor plates are symmetrically arranged. The positioning holes and fruit supporting holes of the left group of conveyor plates are respectively arranged on the left and right sides of the conveyor plates, and the positioning holes and fruit supporting holes of the right group of conveyor plates are respectively arranged on the right and left sides of the conveyor plates.

[0012] The core-pushing mechanism is provided with two groups on the left and right below the middle shelf plate of the frame; the core-pushing mechanism is provided with a core-pushing hole on the middle shelf plate of the frame, a vertical sleeve is provided below the core-pushing hole, a stepped push rod which can slide up and down is provided in the sleeve, the upper part of the stepped push rod is a fine needle rod for ejecting the fruit core, the upper ends of the fine needle rods of the two groups of core-pushing mechanisms pass through the top surface opening of the sleeve and the core-pushing hole of the middle shelf plate of the frame and extend upward and respectively face the centers of the fruit-supporting holes of the left and right feeding plates of the core-pushing stations, the lower part of the stepped push rod is a push column, the upper part of the push column is The end is slidably inserted into the sleeve, and a push column bolt which penetrates horizontally is provided in the middle of the push column. A vertical return spring is sleeved on the outer side of the push column between the lower end surface of the sleeve and the push column bolt. A pulley is provided at the lower end of the push column. The pulleys of the two sets of step push rods of the top core mechanism are respectively pressed against the left and right lower cams of the active shaft from the upper side, and the step push rod is driven to move up and down once every rotation of the lower cam. One end of the push column bolt is also fixedly connected with a limit fork extending downward, and the limit fork is clamped on the active shaft to prevent the step push rod from rotating.

[0013] The denuclearization mechanism is rotatably supported by a vertical shaft penetrating the middle frame plate at the central position of the middle frame plate of the frame through a bearing seat assembly. A horizontal turntable is fixedly sleeved on the middle part of the vertical shaft above the middle frame plate and above the conveying mechanism. The turntable is provided with a circle of mounting holes evenly spaced along the circumference of the disk surface, and each mounting hole is equipped with a denuclearization clamp. The turntable is also provided with a circle of positioning through holes on the inner side of the circle of mounting holes, and each positioning through hole corresponds to a denuclearization clamp. The lower end of the vertical shaft is fixedly connected to a horizontal star wheel below the middle frame plate. The number of teeth of the horizontal star wheel is equal to the number of denuclearization clamps on the turntable and both are multiples of 4. The horizontal star wheel position The turntable is located above the driving shaft and corresponds to the turntable lever of the driving shaft. Every time the turntable lever rotates one circle, the horizontal star wheel is driven to intermittently rotate one tooth position, and the turntable rotates synchronously with the horizontal star wheel. Every time the horizontal star wheel rotates one tooth position, the turntable is driven to rotate the displacement of a core-removing clamp. When the core-removing clamp on the turntable is located on the left and right sides, it is a core-removing station, and the centers of the core-removing clamps at the left and right core-removing stations are respectively facing the centers of the fruit-supporting holes of the feed plates of the left and right core-removing stations below; when the core-removing clamp on the turntable is located at the front and rear sides, it is a core-releasing station, and the middle and lower rack plates of the frame are provided with core-discharging holes at the positions corresponding to the core-removing clamps at the front and rear core-releasing stations.

[0014] The linkage mechanism is raised and rotatably supported by a horizontal and transverse driven shaft through a bearing seat assembly at a position corresponding to the upper and lower positions of the driving shaft above the upper shelf plate of the frame, and the shaft body of the driven shaft is fixedly connected with the left-side feeding plate positioning cam, the left-side de-core cam, the double positioning cam, the right-side de-core cam, the right-side feeding plate positioning cam, and the air valve lever in sequence from left to right, which rotate synchronously with the driven shaft; the upper shelf plate is provided with a feeding plate positioning rod assembly through a guide hole just above the positioning holes of the feeding plates corresponding to the left and right de-core stations; the upper shelf plate is provided with a turntable positioning rod assembly through a guide hole just above the positioning through holes of the left and right de-core stations of the turntable; the upper shelf plate is provided with a turntable positioning rod assembly through a guide hole A de-core elastic jack assembly is respectively arranged on each frame through a guide hole directly above the de-core pliers of the two left and right de-core stations; a core releasing elastic jack assembly is respectively arranged on each frame through a guide hole directly above the de-core pliers of the two core releasing stations in front and behind the corresponding turntable on the upper frame plate; the two de-core elastic jack assemblies and the upper parts of the two core releasing elastic jack assemblies are connected together through a cross plate located above the driven shaft and move synchronously; a mechanical air valve with a roller switch is arranged on the side of the upper frame plate corresponding to the air valve lever on the right side, the air inlet of the mechanical air valve is connected to the external air supply, the air outlet of the mechanical air valve is connected to the air supply pipeline, the air supply pipeline is divided into two branches through a three-way joint and respectively connected to the air inlets of the two core releasing elastic jack assemblies.

[0015] The shell and meat ejection mechanism is provided with two groups on the left and right between the middle shelf plate and the lower shelf plate of the frame; the shell and meat ejection mechanism is provided with a horizontal longitudinal sliding sleeve through the lower support plate below the middle shelf plate of the frame, and a horizontal longitudinal sliding rod is slidably sleeved in the sliding sleeve, and a pushing end is provided at the rear end of the sliding rod. The pushing ends of the sliding rods of the two groups of shell and meat ejection mechanism are respectively facing the centers of the fruit supporting holes of the feeding plates of the two left and right shell and meat discharging stations at the rear, and a clamping frame is provided at the front end of the sliding rod, and a sliding rod return spring is sleeved between the sliding sleeve and the clamping frame on the outer side of the sliding rod, so that the pushing end of the sliding rod The elastic backing rests on the rear end surface of the sliding sleeve; the top shell meat mechanism is equipped with a rocker arm that extends vertically upward and can swing forward and backward above the lower shelf plate of the frame. The rocker arm is located behind the active shaft, and the upper end of the rocker arm is movably inserted into the card frame of the sliding rod. A support rod extending forward is provided in the middle of the rocker arm, and a pulley is provided at the end of the support rod. The pulleys of the two sets of support rods of the top shell meat mechanism rest on the left and right lower cams of the active shaft from the rear side respectively. The lower cam drives the rocker arm to swing backward once every rotation, and then the rear-swinging rocker arm pushes the sliding rod to push backward once.

[0016] The present dual-path single-turntable longan core removing machine is an improved design based on the previous single-motor driven mechanical linkage longan core removing machine. It not only retains many advantages of the original technical solution, such as accurate processing positioning, precise core removal, good integrity of processed pulp, the core removing pliers used to separate the fruit stalk and pulp can match fruits of different sizes, and the pliers head of the core removing pliers can be easily removed and cleaned after shutdown, but also improves the single-path single-turntable structure of the original technical solution into a single-turntable structure running in left and right dual paths. On the present longan core removing machine, the operations of placing, conveying, core removal, core removal, and shell and flesh removal of longan can be carried out in dual paths, thereby effectively improving the processing efficiency of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the longan pitting machine.

[0018] Figure 2 for Figure 1 Front view of the longan pitting machine.

[0019] Figure 3 for Figure 1 Left view of the longan pitting machine.

[0020] Figure 4 for Figure 1 Schematic diagram of the three-dimensional structure of the longan pitting machine after it is rotated 180° front and back.

[0021] Figure 5 It is a three-dimensional structural schematic diagram of the linkage mechanism at the upper shelf of the rack.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the main power mechanism at the lower shelf of the rack.

[0023] Figure 7 This is a schematic diagram of the conveying plate group on the left side of the conveying mechanism.

[0024] Figure 8 for Figure 7 Exploded view of the feed plate.

[0025] Fig. 9 Schematic diagram of the three-dimensional structure of the top core mechanism.

[0026] Fig.10 for Fig. 9 Front view of the top core mechanism.

[0027] Fig.11 Schematic diagram of the three-dimensional structure of the denuclearization mechanism.

[0028] Fig.12 This is a schematic diagram of the three-dimensional structure of the denuclearization mechanism after removing the denuclearization clamp.

[0029] Fig.13Schematic diagram of the three-dimensional structure of the denuclearization clamp.

[0030] Fig.14 for Fig.13 Front view of the enucleation forceps.

[0031] Fig.15 for Fig.14 Enlarged view of the AA section of the blade of the enucleation forceps.

[0032] Fig.16 It is a schematic diagram of the three-dimensional structure of the denuclearization clamp seat.

[0033] Fig.17 It is a schematic diagram of the three-dimensional structure of the nucleus removal forceps head.

[0034] Fig.18 This is a schematic diagram of the three-dimensional structure after the denucleation forceps head is rotated 180° up and down.

[0035] Fig.19 for Fig.17 Exploded view of the parts of the de-coring pliers head.

[0036] Fig. 20 It is a three-dimensional structural schematic diagram of the linkage mechanism feed plate positioning rod assembly and the turntable positioning rod assembly.

[0037] Fig.21 It is a schematic diagram of the three-dimensional structure of the linkage mechanism when the core-removing elastic plug assembly, the core-releasing elastic plug assembly and the cross plate are connected.

[0038] Fig. 22 for Fig.21 Schematic diagram of the three-dimensional structure when the two de-core elastic head components are separated from the cross plate.

[0039] Fig.23 It is an enlarged front cross-sectional view of the lower part of the core-releasing elastic plug assembly.

[0040] Fig.24 It is a schematic diagram of the three-dimensional structure of the top shell meat mechanism.

[0041] Fig.25 It is a schematic diagram of the three-dimensional structure of the supporting slide of the conveying mechanism.

[0042] Fig.26 It is a schematic diagram of the three-dimensional structure of the lower tray of the denuclearization mechanism.

[0043] In the figure: 1-frame, 2-driving shaft, 3-reduction motor, 3.1-motor control box, 4-chain transmission assembly, 5-driven shaft, 6-sprocket lever, 7-lower cam, 8-turntable lever, 9-conveying chain ring, 10-driving sprocket, 11-driven sprocket, 12-vertical star wheel, 13-feeding plate, 13.1-positioning hole, 13.2-fruit support hole, 13.3-upper pressure plate, 13.31-positioning upper hole, 13.32-upper pressure hole, 13.4-middle plate, 13.41-positioning middle hole, 13.42-bracket mounting hole, 13.5-lower support plate, 13. 51-lower bottom hole, 13.6-fruit support, 14-support slide, 15-limit block, 16-sleeve, 17-stepped top rod, 17.1-thin needle rod, 17.2-top column, 18-top column bolt, 19-vertical return spring, 20-limit fork, 21-vertical shaft, 22-turntable, 22.1-mounting hole, 22.2-positioning through hole, 23-core removal pliers, 24-horizontal star wheel, 25-core discharge hole, 25.1-core discharge guide cylinder, 26-lower tray, 27-slide cylinder, 28-locking nut, 29-cylindrical slider, 29.1-strip groove, 29 .2-knife shaft receiving groove, 29.3-spring receiving groove, 30-push rod, 31-flat cover, 32-vent bolt, 32.1-vent hole, 33-flat washer, 34-tension spring, 35-blade, 35.1-vertical blade, 35.2-knife shaft, 35.3-inclined blade, 35.4-knife head, 35.5-side blade, 36-holding spring, 37-cross plate, 38-feeder plate positioning cam, 39-core removal cam, 40-double positioning cam, 41-valve lever, 42-feeder plate positioning rod assembly, 43-turntable positioning rod assembly, 44-core removal Elastic jack assembly, 45-core-releasing elastic jack assembly, 46-mechanical air valve, 47-gas pipeline, 47.1-tee joint, 48-positioning rod, 49-frame sleeve, 50-tension spring, 51-guide sleeve, 52-U-shaped baffle, 53-limiting rod, 54-jack, 54.1-air blowing channel, 55-jack clamp, 56-rectangular frame, 57-tension spring, 58-sealing pad, 59-lower support plate, 60-sliding sleeve, 61-sliding rod, 61.1-pushing end, 61.2-card frame, 62-sliding rod return spring, 63-rocker, 63.1-support rod. DETAILED DESCRIPTION

[0044] The utility model is further described below in conjunction with the accompanying drawings. In the description of the utility model, directional words such as "front", "back", "left", "right", "up", and "down" are based on the attached drawings of the specification. Figure 1 The orientation or position relationship shown is only defined to facilitate the description of the present invention, rather than referring to a specific orientation that a device or element must have, and should not be regarded as a limitation to the present invention.

[0045] like Figure 1-4 As shown, the dual-path single-turntable longan core removing machine is provided with a frame 1 with upper, middle and lower three-layer shelves, and the frame 1 is provided with a main power mechanism, a conveying mechanism, two groups of core pushing mechanisms, a core removing mechanism, a linkage mechanism, and two groups of shell and meat pushing mechanisms.

[0046] like Figure 5-6 As shown, the main power mechanism is raised and rotatably supports a horizontal driving shaft 2 above the lower shelf of the frame 1 through a bearing seat assembly, the right end of the driving shaft 2 is connected to the reduction motor 3 through a coupling, and the reduction motor 3 drives the driving shaft 2, and the left end of the driving shaft 2 is connected to the driven shaft 5 of the linkage mechanism through a vertically arranged chain transmission assembly 4, so that the driven shaft 5 keeps synchronous rotation with the driving shaft 2; the shaft body of the driving shaft 2 is also fixedly connected with a sprocket lever 6, a left lower cam 7, a turntable lever 8, and a right lower cam 7 from left to right, which rotate synchronously with the driving shaft 2. A motor control box 3.1 for controlling the reduction motor 3 is provided on one side of the frame 1, and a power switch and a speed control knob are provided on the motor control box 3.1.

[0047] like Figure 1-4 and Figure 6 As shown, the conveying mechanism is provided with left and right groups of conveying chains on the outer sides of the middle and lower shelf plates of the frame 1, and each group of conveying chains is provided with two parallel and spaced vertical conveying chain circles 9, and the four conveying chain circles 9 of the two groups of conveying chains are driven to move synchronously by the coaxial four-row driving sprocket 10 installed at the rear end of the lower shelf plate, and the front end of the lower shelf plate and the front and rear ends of the middle shelf plate are respectively provided with driven sprockets 11 for supporting each conveying chain circle 9, and the wheel shaft of the driving sprocket 10 extends to the left and is connected with a vertical star wheel 12, which is located behind the driving shaft 2 and corresponds to the sprocket lever 6 on the driving shaft 2, and the sprocket lever 6 drives the vertical star wheel 12 to intermittently rotate one tooth position every time it rotates one circle, and the driving sprocket 10 rotates synchronously with the vertical star wheel 12; the two groups of conveying chains are arranged at their Each fixed span between the two conveying chain circles 9 is provided with a group of conveying plates 13 evenly spaced along the outer edge of the conveying chain circle 9. The conveying plates 13 move synchronously with the conveying chain circle 9. The vertical star wheel 12 drives the conveying chain circle 9 to move a displacement of the conveying plate 13 every time it rotates one tooth position. When the conveying plate 13 is located directly above the driving shaft 2, it is a core removal station. When the conveying plate 13 is located at the uppermost end directly behind, it is a shell and meat removal station. Positioning holes 13.1 and fruit holding holes 13.2 are provided on the conveying plate 13. The left and right groups of conveying plates 13 are symmetrically arranged. The positioning holes 13.1 and fruit holding holes 13.2 of the left group of conveying plates 13 are respectively arranged on the left and right sides of the conveying plate 13, and the positioning holes 13.1 and fruit holding holes 13.2 of the right group of conveying plates 13 are respectively arranged on the right and left sides of the conveying plate 13.

[0048] like Figure 6-8As shown, the feed plate 13 is fixedly connected to the curved plates on the sides of the two conveying chain rings 9 by bolts on the left and right sides. The feed plate 13 is composed of an upper pressure plate 13.3, an intermediate plate 13.4, and a lower support plate 13.5 stacked up and down; one end of the lower support plate 13.5 is provided with a lower bottom hole 13.51, and the two ends of the intermediate plate 13.4 are respectively provided with a positioning center hole 13.41 and a bracket mounting hole 13.42, the bracket mounting hole 13.42 is axially aligned with the lower bottom hole 13.51 and the aperture of the bracket mounting hole 13.42 is larger than the aperture of the lower bottom hole 13.51, and a stainless steel fruit support rack 13.6 is embedded in the bracket mounting hole 13.42, and the fruit support rack 13.6 is provided with a cylindrical wall matching the bracket mounting hole 13.42, and the cylindrical wall is provided with a cylindrical wall matching the bracket mounting hole 13.42. The upper edge of the wall is provided with a plurality of arc-shaped supporting pieces bent toward the inner side and downward of the cylindrical wall, and the plurality of arc-shaped supporting pieces together form an elastic supporting bucket. A positioning upper hole 13.31 and an upper pressing hole 13.32 are respectively provided at both ends of the upper pressing plate 13.3. The positioning upper hole 13.31 is axially aligned with the positioning middle hole 13.41 and has the same aperture. The upper pressing hole 13.32 is axially aligned with the bracket mounting hole 13.42 and the aperture of the upper pressing hole 13.32 is smaller than the aperture of the bracket mounting hole 13.42. The positioning upper hole 13.31 and the positioning middle hole 13.41 together form the positioning hole 13.1 of the conveying plate 13, and the upper pressing hole 13.32, the fruit supporting frame 13.6 and the lower bottom hole 13.51 together form the fruit supporting hole 13.2 of the conveying plate 13.

[0049] In order to ensure that the conveying plate 13 moves horizontally above the middle shelf of the frame 1, Figure 3 and Fig.25 As shown, the top surface of the middle shelf of the frame 1 is provided with two left and right longitudinal support slides 14 for preventing the conveying plates 13 from falling during the travel, respectively, at the positions corresponding to the left and right groups of conveying plates 13 passing through, and the pulleys on the two support slides 14 support the two groups of conveying plates 13 passing through from the bottom; Figure 1-4 As shown, the top surface of the middle shelf plate of the frame 1 is provided with two left and right limit blocks 15 at the outer edges corresponding to the left and right groups of conveying plates 13 for preventing the conveying plates 13 from tilting upward during their movement.

[0050] like Figure 1-4 , Figure 6 and Figure 9-10As shown, the core-pushing mechanism is provided with two groups on the left and right below the middle shelf plate of the frame 1; the core-pushing mechanism is provided with a core-pushing hole on the middle shelf plate of the frame 1, and a vertical sleeve 16 is provided below the core-pushing hole, and a stepped push rod 17 that can slide up and down is provided in the sleeve 16, and the upper part of the stepped push rod 17 is a fine needle rod 17.1 for ejecting the fruit core, and the upper ends of the fine needle rods 17.1 of the two groups of core-pushing mechanisms pass through the top surface opening of the sleeve 16 and the core-pushing hole of the middle shelf plate of the frame 1 and extend upward and respectively face the centers of the fruit-supporting holes 13.2 of the left and right feeding plates 13 of the core-pushing stations, and the lower part of the stepped push rod 17 is a push column 17.2, and the push column 17.2 The upper end is slidably inserted into the sleeve 16, and a horizontally penetrating top column bolt 18 is provided in the middle of the top column 17.2. A vertical return spring 19 is sleeved on the outer side of the top column 17.2 between the lower end surface of the sleeve 16 and the top column bolt 18. A pulley is provided at the lower end of the top column 17.2. The pulleys of the two sets of top core mechanism step top rods 17 are respectively pressed against the left and right lower cams 7 of the active shaft 2 from the upper side. The lower cam 7 drives the step top rod 17 to move up and down once every rotation of the lower cam 7; one end of the top column bolt 18 is also fixedly connected to a downwardly extending limit fork 20, which is clamped on the active shaft 2 to prevent the step top rod 17 from rotating.

[0051] like Figure 1-4 , Figure 6 and Figure 11-12As shown, the denuclearing mechanism is rotatably supported by a vertical shaft 21 that penetrates the middle frame plate at the central position of the middle frame plate of the frame 1 through a bearing seat assembly, and a horizontal turntable 22 is fixedly sleeved at the middle part of the vertical shaft 21 above the middle frame plate and above the conveying mechanism. The turntable 22 is provided with a circle of mounting holes 22.1 that are evenly spaced along the circumference of the disk surface, and each mounting hole 22.1 is respectively installed with a denuclearing clamp 23. The turntable 22 is also provided with a circle of positioning through holes 22.2 on the inner side of the circle of mounting holes 22.1, and each positioning through hole 22.2 corresponds to a denuclearing clamp 23 respectively. The lower end of the vertical shaft 21 is fixedly connected to a horizontal star wheel 24 below the middle frame plate. The number of teeth of the horizontal star wheel 24 is equal to the number of the denuclearing clamps 23 on the turntable 22 and are both multiples of 4. The flat star wheel 24 is located above the driving shaft 2 and corresponds to the turntable lever 8 of the driving shaft 2. The turntable lever 8 drives the horizontal star wheel 24 to rotate one tooth position intermittently every time it rotates one circle. The turntable 22 rotates synchronously with the horizontal star wheel 24. The horizontal star wheel 24 drives the turntable 22 to rotate by the displacement of the denuclearing clamp 23 every time it rotates one tooth position. When the denuclearing clamp 23 on the turntable 22 is located on the left and right sides, it is a denuclearing station. The centers of the denuclearing clamps 23 of the left and right denuclearing stations are respectively facing the centers of the fruit supporting holes 13.2 of the left and right denuclearing station feeder plates 13 below. When the denuclearing clamp 23 on the turntable 22 is located in the front and rear sides, it is a denuclearing station. The middle and lower racks of the frame 1 are provided with a denuclearing hole 25 at the position corresponding to the denuclearing clamps 23 of the front and rear denuclearing stations. Further, the middle rack of the frame 1 is provided with a denuclearing guide cylinder 25.1 above the denuclearing hole 25. Furthermore, the denuclearization mechanism is also provided below the turntable 22 with a Fig.26 The lower tray 26 shown is fixedly mounted above the middle shelf of the frame 1 by means of legs. A central opening is provided in the center of the lower tray 26 for the vertical shaft 21 to pass through. The top surface of the lower tray 26 is slidably supported against the bottom surface of the turntable 22 to prevent the turntable 22 from tilting during rotation.

[0052] like Figure 13-19As shown, the denuclearizing pliers 23 is provided with two major parts: a pliers seat and a pliers head; the pliers seat is provided with a vertical slide 27 which passes through from top to bottom, the lower tube mouth of the slide 27 is provided with a circle of inward-retracted retaining edge, the outer side of the slide 27 is connected with a locking nut 28 through an external thread, and the lower end of the outer side of the slide 27 is provided with an outward-extending convex edge; the pliers head is provided with a cylindrical slider 29 which matches the slide 27 of the pliers seat and can slide up and down in the slide 27, the cylindrical slider 29 is provided with a center hole, a push rod 30 is slidably sleeved in the center hole, a push head which is larger than the aperture of the center hole of the cylindrical slider 29 is provided at the lower end of the push rod 30, a threaded hole which passes through from top to bottom is provided in the center of the push rod 30, a flat plate cover 31 with a center hole is placed on the top surface of the cylindrical slider 29, and the upper end rod body of the push rod 30 passes upward through the center hole of the cylindrical slider 29 and the flat plate The middle hole of the cover 31 is extended outward from the top surface of the flat cover 31, and a vent bolt 32 is connected to the threaded hole of the push rod 30. The screw head of the vent bolt 32 is pressed on the upper end surface of the push rod 30 through a flat washer 33. The lower end of the vent bolt 32 extends downward from the push head of the push rod 30 for a distance. The center of the vent bolt 32 is provided with a vent hole 32.1 that runs through the top and bottom. The push rod 30 is sleeved with a tensioning spring 34 on the rod body between the flat washer 33 and the flat cover 31. The tensioning spring 34 pulls the push head at the lower end of the push rod 30 to rest on the lower side hole edge of the center hole of the cylindrical slider 29; the outer circumference of the cylindrical slider 29 is provided with a vertically arranged strip groove 29.1 on the front, back, left and right sides, and the outer circumference of the cylindrical slider 29 is also provided with two upper and lower grooves, one narrow and one wide, at the lower part The annular groove of the upper side is the knife shaft receiving groove 29.2, and the annular groove of the lower side is the spring receiving groove 29.3. A blade 35 is installed in each strip groove 29.1; the blade 35 is provided with a vertical blade body 35.1, and the upper end of the vertical blade body 35.1 is provided with a knife shaft 35.2 extending horizontally to both sides, and the lower end of the vertical blade body 35.1 is connected to a section of inwardly gathered inclined blade body 35.3, and the end of the inclined blade body 35.3 is connected to a vertically downward extending blade head 35.4, and the lower end of the blade head 35.4 is provided with a cutting edge; the vertical blade bodies 35.1 of the four-petal blade 35 are respectively movably embedded in the four strip grooves 29.1 of the cylindrical slider 29, and the knife shaft 35.2 is movably embedded in the knife shaft receiving groove 29.2 of the cylindrical slider 29, and the inclined blade body 35.3 is connected to the lower end of the vertical blade body 35.1. The blade body 35.3 and the blade head 35.4 are located below the cylindrical slider 29. The spring receiving groove 29.3 of the cylindrical slider 29 is provided with one or more annular clamping springs 36. The clamping spring ring 36 is clamped on the outer side of the vertical blade body 35.1 of the four-petal blade 35 to make the four-petal blade 35 close inward. When the four-petal blade 35 is fully closed, the blade heads 35.4 are assembled together to form an annular cutting head. The push head of the push rod 30 is located directly above the funnel-shaped frame surrounded by the inclined blade body 35.3 of the four-petal blade. The lower opening of the vent hole 32.1 of the vent bolt 32 is located directly above the annular cutting head. The pliers head is freely placed above the slide cylinder 27 of the pliers seat through the flat cover 31. The cylindrical slider 29 is sleeved at the upper position inside the slide cylinder 27. The blade head 35.4 of the four-petal blade 35 is placed on the upper side of the slide cylinder 27.4 passes through the lower tube opening of the slide tube 27 and extends downward.

[0053] The blade heads 35.4 of the front and rear blades 35 of the four-petal blade 35 are provided with inwardly bent vertical side edges 35.5 on the left and right sides. When the four-petal blade 35 is completely closed, the blade heads 35.5 of the front and rear blades 35 form an enclosure, and the blade heads 35.4 of the left and right blades 35 are fitted and surrounded by the periphery of the blade heads 35.5 of the front and rear blades. When the conventional split-petal blade with a spliced ​​structure cuts into the fruit stem, the cutting effect at the spliced ​​seam of the blade heads is not good, and the edge at the seam is easily worn, resulting in the fruit stem and the flesh remaining partially adhered after cutting, affecting the final core removal effect. However, the utility model encloses the blade heads 35.5 of the front and rear blades 35 and fits the blade heads 35.4 of the left and right blades 35 to the periphery of the blade heads 35.5 of the front and rear blades, which can perfectly solve the problem of poor cutting effect at the spliced ​​seam of the blade heads 35.4, and can effectively reduce the wear rate of the edge at the seam.

[0054] like Figure 1-5As shown, the linkage mechanism is raised and rotatably supported by a horizontal driven shaft 5 at a position corresponding to the upper and lower positions of the driving shaft 2 above the upper shelf of the frame 1 through a bearing seat assembly, and the shaft body of the driven shaft 5 is fixedly connected with the left-side conveyor plate positioning cam 38, the left-side de-core cam 39, the double positioning cam 40, the right-side de-core cam 39, the right-side conveyor plate positioning cam 38, and the air valve lever 41 which rotate synchronously with the driven shaft 5 from left to right; the upper shelf is respectively provided with a conveyor plate positioning rod assembly 42 through a guide hole just above the positioning holes 13.1 of the conveyor plates 13 corresponding to the left and right de-core stations, and the two conveyor plate positioning rod assemblies 42 are respectively driven by the left and right conveyor plate positioning cams 38 The positioning rod 48 is inserted downward into the positioning holes 13.1 of the left and right de-core station feed plates 13 to position the two feed plates 13; the upper shelf plate is respectively provided with a turntable positioning rod assembly 43 through a guide hole just above the positioning through holes 22.2 of the left and right de-core stations of the corresponding turntable 22, and the positioning rods 48 of the two turntable positioning rod assemblies 43 are driven by the double positioning cam 40 to be inserted downward into the positioning through holes 22.2 of the two de-core stations of the turntable 22 to position the turntable 22; the upper shelf plate is respectively provided with a de-core elastic head assembly 44 through a guide hole just above the de-core clamp 23 of the left and right de-core stations of the corresponding turntable 22, and the upper shelf plate is respectively provided with a de-core elastic head assembly 44 through a guide hole on the corresponding turntable 2 A core-releasing elastic plug assembly 45 is respectively mounted above the two core-releasing workstation core-removing pliers 23 through the guide hole. The two core-releasing elastic plug assemblies 44 and the upper parts of the two core-releasing elastic plug assemblies 45 are connected together through the cross plate 37 located above the driven shaft 5 and move synchronously. The two left and right core-releasing cams 39 respectively drive the plugs 54 of the two core-releasing elastic plug assemblies 44 to push the push rods 30 of the two core-releasing workstation core-removing pliers 23 of the turntable 22 downward to control the core-releasing workstation core-removing pliers 23. The two core-releasing elastic plug assemblies 45 move synchronously with the two core-releasing elastic plug assemblies 44. The plugs 54 of the two core-releasing elastic plug assemblies 45 push the two ends of the turntable 22 downward. A push rod 30 of a core-releasing station core-removing clamp 23 is connected to high-pressure air to operate the core-releasing station core-removing clamp 23; a mechanical air valve 46 with a roller switch is installed on the side of the upper shelf corresponding to the air valve lever 41 on the right side, the air inlet of the mechanical air valve 46 is connected to the external air supply, and the air outlet of the mechanical air valve 46 is connected to the air supply pipeline 47, the air supply pipeline 47 is divided into two branches by a three-way joint 47.1 and respectively connected to the air inlets of two core-releasing elastic head assemblies 45, the opening and closing of the mechanical air valve 46 is controlled by the air valve lever 41, when the core-releasing elastic head assembly 45 controls the core-releasing station core-removing clamp 23 to open, the mechanical air valve 46 is opened synchronously to provide high-pressure air for the core-releasing elastic head assembly 45.

[0055] like Fig. 20As shown, the feed plate positioning rod assembly 42 and the turntable positioning rod assembly 43 adopt the same basic structure, and are both provided with a positioning rod 48 that extends downward from the corresponding guide hole that penetrates the upper shelf from top to bottom and can slide up and down. A rectangular frame sleeve 49 that extends vertically upward is fixedly connected to one side of the upper end of the positioning rod 48. The frame sleeve 49 is movably sleeved on the outer periphery of the shaft body of the driven shaft 5. A pulley is provided at the upper end of the frame sleeve 49. The upper end of the positioning rod 48 is also provided with a tension spring 50 on both sides of the front and rear sides to connect with the upper shelf. The tension spring 50 makes the pulley at the upper end of the frame sleeve 49 elastically press against the corresponding cam of the driven shaft 5 from the upper side, and the corresponding cam drives the positioning rod 48 to move up and down once every rotation. Further, a guide sleeve 51 for guiding the rod body of the positioning rod 48 is also provided under the upper shelf of the frame 1. Furthermore, the feed plate positioning rod assembly 42 is also fixedly connected with a horizontal and transverse U-shaped baffle 52 above the lower end of the positioning rod 48. The U-shaped baffles 52 of the left and right feed plate positioning rod assemblies 42 extend inwardly and cross over the fruit supporting holes 13.2 of the left and right core removing station feed plates 13 respectively. The opening width of the U-shaped baffle 52 is larger than the knife head 35.4 at the lower end of the core removing clamp 23 and smaller than the diameter of the fruit supporting hole 13.2. A limit rod 53 extending upward is fixedly provided on the middle shelf plate of the frame 1, and the upper end of the limit rod 53 is inserted into the opening of the U-shaped baffle 52, thereby limiting the rotation of the U-shaped baffle 52; the U-shaped baffle 52 can prevent the knife head 35.4 of the core removing clamp 23 from bringing the longan shell and pulp out of the fruit supporting hole 13.2 when it is retracted upward with the longan core.

[0056] like Figure 21-23As shown, the core-removing elastic plug assembly 44 and the core-releasing elastic plug assembly 45 are both provided with a plug 54 which penetrates the corresponding guide hole of the upper frame plate from top to bottom, extends downward and can slide up and down, and a plug clamping bolt 55 which penetrates vertically is provided on the rod body of the plug 54, and a tension spring 57 is sleeved on the rod body of the plug 54 between the plug clamping bolt 55 and the upper frame plate; the core-removing elastic plug assembly 44 is fixedly connected to a rectangular frame 56 which extends vertically upward on one side of the upper end of the plug 54, The rectangular frame 56 is movably sleeved on the outer periphery of the shaft body of the driven shaft 5. A pulley is provided on the upper end of the head 54 of the core-releasing elastic head assembly 44. Under the action of the tension spring 57 of the core-releasing elastic head assembly 44, the pulleys on the upper ends of the heads 54 of the left and right core-releasing elastic head assemblies are elastically pressed against the left and right core-releasing cams 39 of the driven shaft 5 from the lower side respectively; a vertical air blowing channel 54.1 is provided inside the head 54 of the core-releasing elastic head assembly 45, which passes through the lower end surface of the head 54. , and one end of the plug bolt 55 serves as the air inlet of the core-releasing elastic plug assembly 45 and is provided with an airway that is connected to the air blowing channel 54.1, and a circle of sealing rubber pads 58 are provided on the lower end surface of the plug 54 at the periphery of the air outlet of the air blowing channel 54.1; the upper sections of the plugs 54 of the front and rear two core-releasing elastic plug assemblies 45 are respectively fixedly connected to the front and rear ends of the cross plate 37, and the left and right ends of the cross plate 37 are respectively inserted into the rectangular frames 56 of the left and right de-core elastic plug assemblies 44 above the driven shaft 5, and under the action of the tension spring 57 of the core-releasing elastic plug assembly 45, the left and right ends of the cross plate 37 are elastically pressed against the upper edges of the inner frames of the left and right de-core elastic plug assemblies rectangular frames 56 respectively from the bottom; the left and right de-core cams 39 drive the plugs 54 of the left and right de-core elastic plug assemblies 44 to move up and down once every rotation, and the plugs 54 of the front and rear two de-core elastic plug assemblies 45 also move up and down once synchronously.

[0057] like Figure 6 and Fig.24As shown, the shell meat ejecting mechanism is provided with two groups on the left and right between the middle shelf plate and the lower shelf plate of the frame 1; the shell meat ejecting mechanism is installed with a horizontal longitudinal sliding sleeve 60 through the lower support plate below the middle shelf plate of the frame 1, and a horizontal longitudinal sliding rod 61 is slidably sleeved in the sliding sleeve 60, and a pushing end 61.1 is provided at the rear end of the sliding rod 61, and the pushing ends 61.1 of the two groups of sliding rods 61 of the shell meat ejecting mechanism are respectively facing the center of the fruit supporting holes 13.2 of the feeding plates 13 of the two left and right shell meat discharging stations at the rear, and a clamping frame 61.2 is provided at the front end of the sliding rod 61, and a sliding rod return spring 62 is sleeved on the outer side of the sliding rod 61 between the sliding sleeve 60 and the clamping frame 61.2, so that the pushing end 61 of the sliding rod 61 The end 61.1 elastically presses against the rear end surface of the sliding sleeve 60; the top shell meat mechanism is equipped with a rocker rod 63 that extends vertically upward and can swing forward and backward above the lower shelf plate of the frame 1. The rocker rod 63 is located behind the driving shaft 2, and the upper end of the rocker rod 63 is movably inserted into the clamping frame 61.2 of the slide bar 61. A support rod 63.1 extending forward is provided in the middle of the rocker rod 63, and a pulley is provided at the end of the support rod 63.1. The pulleys of the two sets of support rods 63.1 of the top shell meat mechanism are respectively pressed against the left and right lower cams 7 of the driving shaft 2 from the rear side. The lower cam 7 drives the rocker rod 63 to swing backward once every rotation, and then the swinging rocker rod 63 pushes the slide bar 61 backward once.

[0058] The working process of this longan pitting machine is as follows:

[0059] (1) The operator manually places the longans to be pitted one by one with the fruit stem facing upward into the fruit holding holes 13.2 of the left and right feed plates 13 behind the pitting station. After starting the reduction motor 3, the main power mechanism of the machine drives the conveying mechanism, the two sets of pitting mechanisms, the pitting mechanism, the linkage mechanism, and the two sets of shell and flesh lifting mechanisms to work synchronously in a mechanical linkage manner.

[0060] (2) The sprocket lever 6 on the driving shaft 2 drives the vertical star wheel 12 to rotate intermittently by one tooth position every time it rotates one circle, thereby driving the conveying chain ring 9 to move from front to back by the displacement of the feed plate 13; the two turntable levers 8 on the driving shaft 2 drive the horizontal star wheel 24 to rotate intermittently by one tooth position every time it rotates one circle, thereby driving the turntable 22 to rotate by the displacement of the core stripping clamp 23.

[0061] (3) When the left and right sets of conveyor plates 13 carry the longans to the core removal station, the left and right conveyor plate positioning cams 38 respectively drive the positioning rods 48 of the two conveyor plate positioning rod assemblies 42 to insert downward into the positioning holes 13.1 of the left and right conveyor plates 13 of the core removal stations to position the two conveyor plates 13; at the same time, the double positioning cams 40 drive the positioning rods 48 of the two turntable positioning rod assemblies 43 to insert downward into the positioning through holes 22.2 of the two core removal stations of the turntable 22 to position the turntable 22.

[0062] (4) The two left and right core-removing cams 39 respectively drive the heads 54 of the two core-removing elastic head assemblies 44 to push the push rods 30 of the two core-removing pliers 23 of the core-removing station of the turntable 22 downward to operate the core-removing pliers 23 of the core-removing station. When the push rod 30 of the core-removing pliers 23 of the core-removing station moves downward, the four-petal blade 35 moves downward together with the cylindrical slider 29 until the cylindrical slider 29 abuts against the retaining edge of the lower barrel opening of the slide cylinder 27. At this time, the four-petal blade 35 is completely retracted under the action of the clamping spring 36, and the blade head 35.4 penetrates the longan fruit stem downward to a certain depth in the form of a ring-shaped cutting head. Then, the push rod 30 continues to move downward and presses on the funnel-shaped frame surrounded by the inclined blade body 35.3 of the four-petal blade 35, so that the blade head 35.4 of the four-petal blade 35 is opened to a certain extent, and the opened blade head 35.4 stretches the flesh connected around the fruit stem, so that the fruit stem and the flesh are completely separated. Since the split blade design of first piercing and then opening is adopted, the blade head size can be designed according to the size of the smaller fruit stem to match fruits of different sizes. When the blade heads 35.4 of the four-blade blades 35 of the two left and right pitting pliers 23 are opened, the two left and right lower cams 8 respectively drive the two stepped push rods 17 of the pitting mechanism to push upward, and the fine needle rods 17.1 of the two stepped push rods 17 respectively push into the longan fruit shell and pulp from the bottom of the fruit supporting holes 13.2 of the two left and right feeding plates 13 and push the longan core upward, and then the push rod 30 returns to its position upward, and the blade heads 35.4 of the four-blade blades 35 of the two pitting pliers 23 of the pitting station are closed again under the action of the clamping spring 36, and the ejected longan core is clamped on the blade head 35.4 and moved back to its position together with the cylindrical slider 29.

[0063] (5) The pitted longan in the left and right fruit-holding holes 13.2 continues to move backward gradually along with the feed plate 13. The left and right lower cams 7 drive the stepped push rods 17 of the two core-pushing mechanisms to push upward, and at the same time, drive the swing rods 63 of the two shell-pushing mechanisms to swing backward, so that the pushing ends 61.1 of the slide rods 61 of the two shell-pushing mechanisms are pushed backward, and the pitted longan shells and longan flesh on the two shell-pushing stations feed plates 13 are pushed out of the left and right fruit-holding holes 13.2 and fall into the lower part for collection, and then sent to the next process for shell-pushing separation.

[0064] (6) The two core-removing pliers 23 holding the longan core on the turntable 22 gradually rotate to their respective core-releasing positions. Under the connection of the cross plate 37, the two core-releasing elastic plug assemblies 45 follow the two core-releasing elastic plug assemblies 44 to move synchronously. The plugs 54 of the two core-releasing elastic plug assemblies 45 push down the push rods 30 of the two core-releasing pliers 23 at the core-releasing positions of the turntable 22 and connect them with high-pressure air to control the core-releasing pliers 23 at the core-releasing positions. The push rods of the core-releasing pliers 23 at the core-releasing positions are pushed downward. When the push rod 30 moves downward, the blade head 35.4 of the four-petal blade 35 opens, and at the same time, the air blowing channels 53 of the two core-releasing elastic head assemblies 45 are connected with the air vent holes 32.1 of the air vent bolts on the push rod 30, and the high-pressure air blown out by the air blowing channels 54.1 blows the clamped fruit cores downward through the air vent holes 32.1 of the air vent bolts, and the fruit cores blown out by the core-removing pliers 23 at the front and rear core-releasing stations fall into the front and rear core-discharging guide cylinders 25.1 respectively and fall into the bottom through the core-discharging holes 25 of the middle shelf and the lower shelf for collection.

[0065] The above-mentioned figures are only typical embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dual-path single-turntable longan pitting machine, characterized by: The machine frame is provided with upper, middle and lower three-layer racks, and the machine frame is provided with a main power mechanism, a conveying mechanism, two sets of core-lifting mechanisms, a core-removing mechanism, a linkage mechanism and two sets of shell-and-meat-lifting mechanisms; The main power mechanism is raised above the lower shelf plate of the frame through a bearing seat assembly and rotatably supports a horizontal driving shaft, the right end of the driving shaft is connected to the reduction motor through a coupling, and the reduction motor drives the driving shaft, and the left end of the driving shaft is connected to the driven shaft of the linkage mechanism through a vertically arranged chain transmission assembly, so that the driven shaft and the driving shaft keep rotating synchronously; the shaft body of the driving shaft is also fixedly connected with a sprocket lever, a left lower cam, a turntable lever, and a right lower cam that rotate synchronously with the driving shaft from left to right; The conveying mechanism is provided with left and right groups of conveying chains on the outer sides of the middle and lower shelf plates of the frame, and each group of conveying chains is provided with two parallel and spaced vertical conveying chain circles, and the four conveying chain circles of the two groups of conveying chains are driven to move synchronously by the coaxial four-row driving sprockets installed at the rear end of the lower shelf plate, and the front and rear ends of the middle shelf plate are respectively provided with driven sprockets for supporting each conveying chain circle, and the wheel shaft of the driving sprocket extends to the left and is connected with a vertical star wheel, which is located behind the driving shaft and corresponds to the sprocket lever on the driving shaft, and the sprocket lever drives the vertical star wheel to intermittently rotate one tooth position every time the sprocket lever rotates one circle, and the driving sprocket follows the vertical star wheel. The wheels rotate synchronously; between the two conveyor chain circles, each fixed cross frame has a group of conveyor plates evenly spaced along the outer edge of the conveyor chain circle, and the conveyor plates move synchronously with the conveyor chain circle. Each rotation of the vertical star wheel by one tooth position drives the conveyor chain circle to move a displacement of the conveyor plate. When the conveyor plate is located directly above the driving shaft, it is the core removal station, and when the conveyor plate is located at the uppermost end directly behind, it is the shell and meat removal station; positioning holes and fruit supporting holes are provided on the conveyor plates, and the left and right groups of conveyor plates are symmetrically arranged. The positioning holes and fruit supporting holes of the left group of conveyor plates are respectively arranged on the left and right sides of the conveyor plates, and the positioning holes and fruit supporting holes of the right group of conveyor plates are respectively arranged on the right and left sides of the conveyor plates; The core-pushing mechanism is provided with two groups on the left and right below the middle shelf plate of the frame; the core-pushing mechanism is provided with a core-pushing hole on the middle shelf plate of the frame, a vertical sleeve is provided below the core-pushing hole, a stepped push rod which can slide up and down is provided in the sleeve, the upper part of the stepped push rod is a fine needle rod for ejecting the fruit core, the upper ends of the fine needle rods of the two groups of core-pushing mechanisms pass through the top opening of the sleeve and the core-pushing hole of the middle shelf plate of the frame and extend upward and respectively face the centers of the fruit-supporting holes of the left and right feeding plates of the two core-pushing stations, and the lower part of the stepped push rod is a push rod. The upper end of the top column is slidably inserted into the sleeve, a top column clamping bolt is provided in the middle of the top column and runs horizontally through it, a vertical return spring is sleeved between the lower end surface of the sleeve and the top column clamping bolt on the outer side of the top column, a pulley is provided at the lower end of the top column, and the pulleys of the two sets of ladder top rods of the top core mechanism are respectively pressed against the left and right lower cams of the active shaft from the upper side, and the ladder top rod is driven to move up and down once every rotation of the lower cam; one end of the top column clamping bolt is also fixedly connected with a limit fork extending downward, and the limit fork is clamped on the active shaft; The denuclearization mechanism is rotatably supported by a vertical shaft penetrating the middle frame plate at the central position of the middle frame plate of the frame through a bearing seat assembly. A horizontal turntable is fixedly sleeved on the middle part of the vertical shaft above the middle frame plate and above the conveying mechanism. The turntable is provided with a circle of mounting holes evenly spaced along the circumference of the disk surface, and each mounting hole is equipped with a denuclearization clamp. The turntable is also provided with a circle of positioning through holes on the inner side of the circle of mounting holes, and each positioning through hole corresponds to a denuclearization clamp. The lower end of the vertical shaft is fixedly connected to a horizontal star wheel below the middle frame plate. The number of teeth of the horizontal star wheel is equal to the number of denuclearization clamps on the turntable and both are multiples of 4. The horizontal star wheel position The turntable is located above the driving shaft and corresponds to the turntable lever of the driving shaft. The turntable lever drives the horizontal star wheel to rotate one tooth position intermittently every time it rotates one circle. The turntable rotates synchronously with the horizontal star wheel. The horizontal star wheel drives the turntable to rotate the displacement of a core-removing clamp every time it rotates one tooth position. When the core-removing clamp on the turntable is located on the left and right sides, it is a core-removing station. The centers of the core-removing clamps of the left and right core-removing stations are respectively facing the centers of the fruit-supporting holes of the left and right core-removing station feed plates below. When the core-removing clamp on the turntable is located in the front and rear sides, it is a core-releasing station. The middle and lower rack plates of the frame are provided with core-discharging holes at the positions corresponding to the core-removing clamps of the front and rear core-releasing stations. The linkage mechanism is raised and rotatably supported by a horizontal and transverse driven shaft through a bearing seat assembly at a position corresponding to the upper and lower positions of the driving shaft above the upper shelf plate of the frame, and the shaft body of the driven shaft is fixedly connected with the left-side feeding plate positioning cam, the left-side de-core cam, the double positioning cam, the right-side de-core cam, the right-side feeding plate positioning cam, and the air valve lever in sequence from left to right, which rotate synchronously with the driven shaft; the upper shelf plate is provided with a feeding plate positioning rod assembly through a guide hole just above the positioning holes of the feeding plates corresponding to the left and right de-core stations; the upper shelf plate is provided with a turntable positioning rod assembly through a guide hole just above the positioning through holes of the left and right de-core stations of the turntable; the upper shelf plate is provided with a turntable positioning rod assembly through a guide hole A de-core elastic plug assembly is respectively arranged on each frame through a guide hole directly above the de-core pliers of the two left and right de-core stations; a core-releasing elastic plug assembly is respectively arranged on each frame through a guide hole directly above the de-core pliers of the two core-releasing stations in front and behind the corresponding turntable on the upper frame plate; the two de-core elastic plug assemblies and the upper parts of the two core-releasing elastic plug assemblies are connected together through a cross plate located above the driven shaft and move synchronously; a mechanical air valve with a roller switch is arranged on the side of the upper frame plate corresponding to the air valve lever on the right side; the air inlet of the mechanical air valve is connected to the external air supply, the air outlet of the mechanical air valve is connected to the air supply pipeline, the air supply pipeline is divided into two branches through a three-way joint and respectively connected to the air inlets of the two core-releasing elastic plug assemblies; The shell and meat ejection mechanism is provided with two groups on the left and right between the middle shelf plate and the lower shelf plate of the frame; the shell and meat ejection mechanism is provided with a horizontal longitudinal sliding sleeve through the lower support plate below the middle shelf plate of the frame, and a horizontal longitudinal sliding rod is slidably sleeved in the sliding sleeve, and a pushing end is provided at the rear end of the sliding rod. The pushing ends of the sliding rods of the two groups of shell and meat ejection mechanism are respectively facing the centers of the fruit supporting holes of the feeding plates of the two left and right shell and meat discharging stations at the rear, and a clamping frame is provided at the front end of the sliding rod, and a sliding rod return spring is sleeved between the sliding sleeve and the clamping frame on the outer side of the sliding rod, so that the pushing end of the sliding rod The elastic backing rests on the rear end surface of the sliding sleeve; the top shell meat mechanism is equipped with a rocker arm that extends vertically upward and can swing forward and backward above the lower shelf plate of the frame. The rocker arm is located behind the active shaft, and the upper end of the rocker arm is movably inserted into the card frame of the sliding rod. A support rod extending forward is provided in the middle of the rocker arm, and a pulley is provided at the end of the support rod. The pulleys of the two sets of support rods of the top shell meat mechanism rest on the left and right lower cams of the active shaft from the rear side respectively. The lower cam drives the rocker arm to swing backward once every rotation, and then the rear-swinging rocker arm pushes the sliding rod to push backward once.

2. The dual-path single-turntable longan pitting machine according to claim 1 is characterized in that: The denuclearizing pliers are provided with two major parts: a pliers seat and a pliers head; the pliers seat is provided with a vertical slide barrel which passes through from top to bottom, the lower barrel mouth of the slide barrel is provided with a circle of inward-retracted retaining edge, the outer side of the slide barrel is connected with a locking nut through an external thread, and the lower end of the outer side of the slide barrel is provided with an outward-extending convex edge; the pliers head is provided with a cylindrical slider which matches the slide barrel of the pliers seat and can slide up and down in the slide barrel, the cylindrical slider is provided with a center hole, a push rod is slidably sleeved in the center hole, a push head which is larger than the aperture of the center hole of the cylindrical slider is provided at the lower end of the push rod, a threaded hole which passes through from top to bottom is provided in the center of the push rod, a flat plate cover with a center hole is placed on the top surface of the cylindrical slider, and the upper end rod body of the push rod passes upward The center hole of the cylindrical slider and the center hole of the flat plate cover extend outward from the top surface of the flat plate cover. A vent bolt is connected to the threaded hole of the push rod. The screw head of the vent bolt is pressed on the upper end surface of the push rod through a flat washer. The lower end of the vent bolt extends downward from the push head of the push rod for a distance. A vent hole that runs through the top and bottom is provided in the center of the vent bolt. A tensioning spring is sleeved on the rod body of the push rod between the flat washer and the flat plate cover. The tensioning spring pulls the push head at the lower end of the push rod to press against the lower side hole edge of the center hole of the cylindrical slider; a vertically arranged strip groove is provided on the front, back, left and right sides of the outer circumference of the cylindrical slider. The circumference is also provided with two annular grooves, one narrow and one wide, at the lower part. The annular groove on the upper side is a knife shaft receiving groove, and the annular groove on the lower side is a spring receiving groove. A blade is installed in each strip groove; the blade is provided with a vertical blade body, and the upper end of the vertical blade body is provided with a knife shaft extending horizontally to both sides, and the lower end of the vertical blade body is connected to a section of inwardly gathered inclined blade body, and the end of the inclined blade body is connected to a vertically downward extending blade head, and the lower end of the blade head is provided with a cutting edge; the vertical blade bodies of the four-petal blades are respectively movably embedded in the four strip grooves of the cylindrical slider, and the knife shaft is movably embedded in the knife shaft receiving groove of the cylindrical slider. The inclined blade body and the blade head are connected to the cylindrical slider. Located below the cylindrical slider, more than one annular clamping spring is provided in the spring receiving groove of the cylindrical slider, and the clamping spring is embraced by the outer side of the vertical blade body of the 4-petal blade to make the 4-petal blade retract inward. When the 4-petal blade is fully retracted, the cutter heads are pieced together to form an annular cutting head, and the push head of the push rod is located directly above the funnel-shaped frame surrounded by the inclined blade bodies of the 4-petal blades, and the lower hole of the vent hole of the vent bolt is located directly above the annular cutting head; the pliers head is freely placed on the slide tube of the pliers seat through the flat cover, and the cylindrical slider is sleeved in the upper position inside the slide tube, and the cutter head of the 4-petal blade extends downward through the lower tube mouth of the slide tube.

3. The dual-path single-turntable longan pitting machine according to claim 2 is characterized in that: The left and right sides of the blade heads of the front and rear blades of the four-petal blade are provided with inwardly bent vertical side edges. When the four-petal blade is fully folded, the side edges of the blade heads of the front and rear blades form a siege, and the blade heads of the left and right blades fit and surround the periphery of the side edges of the blade heads of the front and rear blades.

4. The dual-path single-turntable longan pitting machine according to claim 2 is characterized in that: The feed plate positioning rod assembly and the turntable positioning rod assembly adopt the same basic structure, and are both provided with positioning rods that extend downward from the corresponding guide holes that penetrate the upper shelf plate from top to bottom and can slide up and down. A rectangular frame sleeve that extends vertically upward is fixedly connected to one side of the upper end of the positioning rod. The frame sleeve is movably sleeved on the periphery of the shaft body of the driven shaft. A pulley is provided at the upper end of the frame sleeve. The upper end of the positioning rod is also provided with tension springs on the front and rear sides to be connected to the upper shelf plate. The tension spring causes the pulley at the upper end of the frame sleeve to elastically press against the cam corresponding to the driven shaft from the upper side, and the corresponding cam drives the positioning rod to move up and down once every rotation.

5. The dual-path single-turntable longan pitting machine according to claim 4 is characterized in that: The feed plate positioning rod assembly is also fixedly connected with a horizontal U-shaped baffle above the lower end of the positioning rod, and the U-shaped baffles of the left and right feed plate positioning rod assemblies respectively extend inward and cross over the fruit supporting holes of the left and right two core removing station feed plates, and the opening width of the U-shaped baffle is larger than the knife head at the lower end of the core removing clamp and smaller than the diameter of the fruit supporting hole, and a limit rod extending upward is fixedly provided on the middle shelf plate of the frame, and the upper end of the limit rod is inserted into the opening of the U-shaped baffle.

6. The dual-path single-turntable longan pitting machine according to claim 2 is characterized in that: The de-coring elastic plug assembly and the de-coring elastic plug assembly are both provided with a plug that extends downward from a corresponding guide hole that passes through the upper frame plate from top to bottom and can slide up and down, and a plug clamp is provided on the rod body of the plug, and a tension spring is sleeved on the rod body between the plug clamp and the upper frame plate; the de-coring elastic plug assembly is fixedly connected to a rectangular frame that extends vertically upward on one side of the upper end of the plug, and the rectangular frame is movably sleeved on the periphery of the shaft body of the driven shaft, and a pulley is provided on the upper end of the plug of the de-coring elastic plug assembly, and under the action of the tension spring of the de-coring elastic plug assembly, the pulleys on the upper ends of the plugs of the left and right de-coring elastic plug assemblies elastically press against the left and right de-coring cams of the driven shaft from the lower side respectively; a vertical air blowing channel is provided inside the plug of the de-coring elastic plug assembly that passes through to the lower end face of the plug, and One end of the plug clamp serves as the air inlet of the core-releasing elastic plug assembly and is provided with an airway that is connected to the air blowing channel, and a circle of sealing rubber pad is provided on the lower end surface of the plug at the periphery of the air outlet of the air blowing channel; the upper ends of the plugs of the front and rear two core-releasing elastic plug assemblies are respectively fixedly connected to the front and rear ends of the cross plate, and the left and right ends of the cross plate are respectively inserted into the rectangular frames of the left and right de-core elastic plug assemblies above the driven shaft, and under the action of the tension spring of the core-releasing elastic plug assembly, the left and right ends of the cross plate are elastically pressed against the upper edges of the inner frames of the rectangular frames of the left and right de-core elastic plug assemblies from the bottom respectively; each rotation of the left and right de-core cams drives the plugs of the left and right de-core elastic plug assemblies to move up and down once, and the plugs of the front and rear de-core elastic plug assemblies also move up and down once synchronously.

7. The dual-path single-turntable longan pitting machine according to claim 1 is characterized by: The conveying plate of the conveying mechanism is fixedly connected to the curved plates on the sides of the two conveying chain rings by bolts on the left and right sides. The conveying plate is composed of an upper pressure plate, an intermediate plate, and a lower support plate stacked up and down; a lower bottom hole is provided at one end of the lower support plate, and a positioning middle hole and a bracket mounting hole are respectively provided at both ends of the intermediate plate. The bracket mounting hole is axially aligned with the lower bottom hole and the aperture of the bracket mounting hole is larger than that of the lower bottom hole. A stainless steel fruit support rack is embedded in the bracket mounting hole, and the fruit support rack is provided with a cylindrical wall matching the bracket mounting hole. The upper edge of the cylinder wall is provided with a plurality of arc-shaped supporting pieces bent toward the inner and lower sides of the cylinder wall, and the plurality of arc-shaped supporting pieces together form an elastic supporting bucket. A positioning upper hole and an upper pressing hole are respectively provided at both ends of the upper pressing plate. The positioning upper hole is axially aligned with the positioning middle hole and has the same aperture diameter. The upper pressing hole is axially aligned with the bracket mounting hole and has an aperture smaller than that of the bracket mounting hole. The positioning upper hole and the positioning middle hole together form the positioning hole of the feed conveying plate, and the upper pressing hole, the fruit supporting frame and the lower bottom hole together form the fruit supporting hole of the feed conveying plate.

8. The dual-path single-turntable longan pitting machine according to claim 1 is characterized by: The top surface of the middle shelf plate of the rack is respectively provided with left and right longitudinal supporting slides corresponding to the positions where the left and right groups of conveyor plates pass, which are used to prevent the conveyor plates from falling during their travel, and the pulleys on the two supporting slides support the two groups of conveyor plates passing through from the bottom; the top surface of the middle shelf plate of the rack is respectively provided with left and right limit blocks corresponding to the outer edges where the left and right groups of conveyor plates travel, which are used to prevent the conveyor plates from tilting up during their travel.

9. The dual-path single-turntable longan pitting machine according to claim 1, characterized in that: The middle shelf plate of the frame is provided with a nuclear discharge guide cylinder above the nuclear discharge hole.

10. The dual-path single-rotating disc longan pitting machine according to claim 1, characterized in that: The denuclearizing mechanism is also provided with a lower tray below the turntable. The lower tray is fixedly mounted above the middle shelf plate of the frame through legs. A central opening is provided in the center of the lower tray for the vertical rotating shaft to pass through. The top surface of the lower tray is slidably supported on the bottom surface of the turntable.

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